How do I get Real-time Crypto Wallet balances?

As a cryptocurrency enthusiast and investor, I'm always on the lookout for ways to stay updated on my crypto wallet balances. But with the volatile nature of the crypto market, real-time updates are crucial. Could you elaborate on how I can efficiently access real-time crypto wallet balances? Are there specific apps or platforms that provide such services? Are there any security measures I should take into account while doing so? Your insights would be invaluable in helping me stay on top of my investments.